CN211132173U - Sealing element for infusion container - Google Patents

Abstract

The utility model relates to a sealing element for an infusion container, which is characterized in that the sealing element for the infusion container comprises a cover body and a liquid-proof film or a liquid-proof thin sheet with the thickness of 0.1mm-0.4 mm; the cover body can be arranged on the mouth part of the transfusion container; the liquid isolating film or the liquid isolating sheet is arranged in the cover body and is fixedly connected with the cover body in a sealing way, or the liquid isolating film or the liquid isolating sheet is arranged on the mouth part of the transfusion container or the interface thereof and is fixedly connected with the mouth part of the transfusion container or the interface thereof in a sealing way; the cover body is internally provided with a thermoplastic elastomer pad which is fixedly connected with the cover body in a sealing way. The sealing element is easy to weld and difficult to fall scraps, and can avoid the problem of gas trapping of the thermoplastic elastomer in the injection molding process.

Description

A kind of seal for infusion container

technical field

The utility model relates to a sealing member, which is used for sealing an infusion container.

Background technique

The sealing standard of the injection point of the infusion medicine pack is: take 10 seals and assemble them on the supporting plastic infusion container, fill the container with water for injection with the indicated volume and seal it, and use an injection needle with an outer diameter of 0.8mm. The puncture area of the seal was punctured vertically three times at different points. After the injection needle was pulled out, the plastic infusion container was placed between two parallel flat plates, and an internal pressure of 20kPa was applied for 15 seconds. There should be no liquid leakage at the insertion point.

As shown in FIG. 1, which is the injection molding diagram of the existing integrally formed seal, the existing integrally formed seal includes a PP/PE cover body 3, and the PP/PE cover body 3 is provided with an integrally formed liquid barrier film 7 and a thermoplastic Elastomer (TPE) pad 6, integrally formed liquid barrier film 7 and PP/PE cover body 3 are integrally formed, thermoplastic elastomer pad 6 is provided on the upper side of integrally formed liquid barrier film 7, integrally formed liquid barrier film 7 and thermoplastic elastomer An isolation medium 8 (such as silicone oil/PP film, etc.) is arranged between the pads 6, a water retaining bar 1 is arranged on the thermoplastic elastomer pad 6, a needle punch hole 2 and a glue inlet 10 are arranged on the thermoplastic elastomer pad 6, and the PP A film 5 is provided on the PE cover body 3 . The disadvantages of this structure are: 1. There is an air trapping phenomenon during the injection molding process of the thermoplastic elastomer pad 6; It does not adhere to the part of the integrally formed liquid barrier film 7 and improves the resilience performance of the thermoplastic elastomer pad 6 . However, in actual operation, the thermoplastic elastomer pad 6 cannot flow according to the design concept during the injection molding process, resulting in irregular flow of the thermoplastic elastomer pad 6 during the actual injection molding process, so that the isolation medium 8 is flushed to other parts. The thermoplastic elastomer pad 6 is bonded to the integrally formed liquid barrier film 7 , which reduces the resilience performance of the thermoplastic elastomer pad 6 . 3. According to the standard, when the puncture needle 9 with an outer diameter of 0.8mm (or 1.2mm or 1.6mm) pierces the thermoplastic elastomer pad 6 and the diaphragm 7, after injecting the liquid medicine and pulling it out, the outer diameter of the puncture needle 9 is small. The reason is that the PP/PE cover body 3 and the thermoplastic elastomer pad 6 cannot be peeled off, resulting in the integrally formed liquid barrier film 7 at the punctured part of the puncture needle 9 to restrain the thermoplastic elastomer pad 6, reducing the puncture of the thermoplastic elastomer pad 6. The thickness of the mouth part reduces the resilience of the thermoplastic elastomer pad 6 . There is a leak.

As shown in Figure 2, the existing combined cover includes a PP/PE cover body 3, a hydraulic pressure barrier sheet 7.1 is ultrasonically welded in the PP/PE cover body 3, a film 5 is provided on the PP/PE cover body 3, and the hydraulic pressure barrier sheet 7.1 There is a rubber gasket 6.1 on it. The disadvantages of this structure are: 1. The rubber gasket 6.1 has many production processes, high cost and high probability of being polluted; 2. The PP/PE cover body 3 and the hydraulic barrier 7.1 are welded into a As a whole, due to the thickness of the hydraulic barrier sheet 7.1, burrs and filaments appear on the welding edge (industry standard: there should be no filaments, particles, etc. in the contact part with the liquid, and objects such as filaments and particles falling into the liquid) It will flow to the infusion line with the liquid, and there is a risk of entering the human body). 3. The rubber gasket 6.1 in the combined cover is squeezed by the PP/PE cover body 3 and the hydraulic diaphragm 7.1 to make the rubber gasket 6.1 compress and rebound to solve the problem of needle extraction and leakage; during the infusion process, when the puncture needle 9 When the rubber gasket 6.1 and the hydraulic barrier sheet 7.1 are pierced, a considerable thrust is generated. If the PP/PE cover body 3 and the hydraulic barrier sheet 7.1 are not welded firmly, the rubber gasket 6.1 and the hydraulic barrier sheet 7.1 are pushed by the puncture needle 9 Risk of entering infusion containers. 3. After the puncture of the hydraulic sheet 7.1 in the combined cover, there is a phenomenon of falling chips.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a sealing member for an infusion container, which is easy to weld, is not easy to drop chips, and can avoid the gas trapping problem existing in the injection molding process of the thermoplastic elastomer.

In order to achieve the above purpose, the utility model provides a sealing member for an infusion container, which is characterized in that it comprises a cover body and a liquid barrier film with a thickness of 0.1mm-0.4mm or a liquid barrier sheet with a thickness of 0.1mm-0.4mm; The cover body can be arranged on the mouth of the infusion container; the liquid barrier film or the liquid barrier sheet is arranged in the cover body and is sealed and fixedly connected with the cover body, or the liquid barrier film or the liquid barrier sheet is provided. on the mouth of the infusion container or its interface piece, and is sealed and fixedly connected with the mouth of the infusion container or its interface piece; the cover body is also provided with a thermoplastic elastomer pad, which is sealed and fixedly connected to the cover body.

Preferably, the liquid barrier film or liquid barrier sheet is located on the side of the thermoplastic elastomer pad close to the infusion container.

Preferably, the cover body and the thermoplastic elastomer pad are integrally formed, and the liquid barrier film or the liquid barrier sheet and the cover body are not integrally formed.

Preferably, the liquid barrier film or the liquid barrier sheet and the cover are connected by welding.

Preferably, the thermoplastic elastomer pad and the liquid-barrier membrane or the liquid-barrier sheet are partially or completely separated.

Preferably, an annular protrusion is provided on the inner wall of the cover, and the edge of the liquid barrier film or the liquid barrier sheet is sealed and fixedly connected to the annular protrusion.

Preferably, the liquid barrier film or liquid barrier sheet is located in the middle or bottom of the cover body.

Preferably, one or more needle punch holes are provided on the upper side and/or the lower side of the thermoplastic elastomer pad.

More preferably, the cross-section of the acupuncture hole is circular, elliptical or elliptical-like.

More preferably, the longitudinal section of the acupuncture hole is square or trapezoidal.

More preferably, the inner diameter of the acupuncture hole is smaller than the diameter of the puncture needle, and the puncture needle is a resin needle.

Preferably, the thermoplastic elastomer pad is provided with at least one groove (also known as a hanging space), and the groove is located on the upper side and/or the lower side of the thermoplastic elastomer pad.

Preferably, the side wall of the groove is a straight surface (ie a surface extending in a vertical direction) or a tapered surface. The shape of the groove can be changed according to the structure of the product and the number of holes.

Preferably, the upper side of the cover body is provided with a film, a pull-ring type gland, an easy-folding type gland or an easy-toggle type gland.

More preferably, the pull ring type gland includes a gland body placed on the upper side of the cover body, the edge and the middle of the gland body can be separated by external force, and the middle part of the gland body is connected with the pull ring. When the edge of the body and the middle part are separated, the edge of the gland body remains on the upper side of the cover body; the easy-folding gland includes a gland body placed on the upper side of the cover body, and the gland body is provided with a puncture needle that allows the puncture needle to pass through. The infusion hole of the gland body is provided with an easy-folding handle, the easy-folding handle and the gland body are integrated, and the easy-folding handle and the gland body can be separated from each other by external force, thereby exposing the infusion hole; The easy-pull type gland includes a gland body placed on the upper side of the cover body, the gland body is provided with an infusion hole that allows the puncture needle to pass through, and the infusion hole of the gland body is provided with an easy-wrench handle, and the easy-wrench handle is connected with the infusion hole. The gland body is connected as a whole, and the easy wrench handle and the gland body can be separated from each other by means of external force, thereby exposing the infusion hole.

More preferably, the easy-folding handle is arranged in a direction perpendicular to the upper end surface of the gland body, and the easy wrench handle is arranged in a direction parallel to the upper end surface of the gland body.

Preferably, the infusion container is an infusion bottle or a soft bag, the lower end of the cover body is formed with an interface for connecting with the interface piece of the infusion bottle, the infusion soft bag or the infusion soft bag, and the cover body is provided with one or two a cavity, the thermoplastic elastomer cushion is arranged in at least one cavity of the cover body, and the thermoplastic elastomer cushion is sealed and fixedly connected with the inner wall of the cavity.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The liquid-barrier soft film or liquid-barrier sheet of the present invention has the advantages of thin thickness, good flexibility, and easy welding.

2. The thermoplastic elastomer pad of the present utility model is sealed and fixedly connected with the cover body, and the liquid barrier soft film or liquid barrier sheet and the cover body are welded together by hot melting to isolate the contact between the liquid and the thermoplastic elastomer. The liquid sheet and the thermoplastic elastomer are partially or completely separated. When the puncture needle pulls out the thermoplastic elastomer, the thermoplastic elastomer is not restrained by the liquid barrier soft film or the liquid barrier sheet, which fully exerts the resilience performance of the thermoplastic elastomer. Stops fluids from flowing/seeping out of the integrated cover.

3. The function of the vacant position of the utility model is: reduce the weight of TPE raw materials, reduce the production cost of various integrated covers; can increase the cross-sectional area of the thermoplastic elastomer, accelerate the cooling and shaping of the thermoplastic elastomer, shorten the product molding cycle, improve product output;

4. The purpose of the acupuncture hole provided in the present invention is to reduce the thickness of the acupuncture, which is beneficial to puncture. The thinning of the acupuncture layer can reduce the material used for thermoplastic elastomer, reduce the swarf from the acupuncture, make the product safer, and at the same time, reduce the puncture force , reducing the labor intensity of the user; the inner diameter of the acupuncture hole is reduced, the contact surface between the thermoplastic elastomer and the puncture needle (resin puncture needle) is increased, and the hanging weight is increased, which is in line with international standards, and is more assured during use (now hanging weight is 0.5-1.0Kg), the current domestic standard is 0.3Kg.

5. Since the liquid-barrier soft film or the liquid-barrier sheet and the cover are not integrally formed, the gas trapping problem of the thermoplastic elastomer during the injection molding process can be avoided.

Description of drawings

Fig. 1 is the injection molding diagram of the existing one-piece seal;

Fig. 2 is the injection molding diagram of the existing combined cover;

FIG. 3 is a schematic structural diagram of the sealing member for an infusion container in Example 1. FIG.

FIG. 4 is a schematic structural diagram of the sealing member for an infusion container in Example 16. FIG.

FIG. 5 is an exploded view of the sealing member for an infusion container in Example 16. FIG.

FIG. 6 is a schematic structural diagram of the sealing member for an infusion container in Example 2. FIG.

FIG. 7 is a schematic structural diagram of the sealing member for an infusion container in Example 17. FIG.

FIG. 8 is a schematic structural diagram of the sealing member for an infusion container in Example 3. FIG.

FIG. 9 is a schematic structural diagram of the sealing member for an infusion container in Example 4. FIG.

FIG. 10 is a schematic structural diagram of the sealing member for an infusion container in Example 18. FIG.

11 is a schematic structural diagram of the sealing member for an infusion container in Example 5. FIG.

FIG. 12 is a schematic structural diagram of the sealing member for an infusion container in Example 19. FIG.

Figure 13 is a schematic diagram of acupuncture force.

14 is a schematic structural diagram of the sealing member for an infusion container in Example 6. FIG.

FIG. 15 is a schematic structural diagram of the sealing member for an infusion container in Example 7. FIG.

16 is an exploded view of the sealing member for an infusion container in Example 7. FIG.

17 is a schematic structural diagram of the sealing member for an infusion container in Example 8. FIG.

FIG. 18 is a schematic structural diagram of the sealing member for an infusion container in Example 9. FIG.

FIG. 19 is a schematic structural diagram of the sealing member for an infusion container in Example 10. FIG.

FIG. 20 is a schematic structural diagram of the sealing member for an infusion container in Example 11. FIG.

FIG. 21 is a schematic structural diagram of the sealing member for an infusion container in Example 12. FIG.

FIG. 22 is an exploded view of the sealing member for an infusion container in Example 12. FIG.

FIG. 23 is a schematic structural diagram of the sealing member for an infusion container in Example 13. FIG.

FIG. 24 is a schematic structural diagram of the sealing member for an infusion container in Example 14. FIG.

FIG. 25 is a schematic structural diagram of the sealing member for an infusion container in Example 15. FIG.

FIG. 26 is a schematic structural diagram of the sealing member for an infusion container in Example 21. FIG.

27 is a bottom view of the sealing member for an infusion container in Example 21. FIG.

Figure 28 is a standard resin needle diagram.

FIG. 29 is a schematic structural diagram of the sealing member for an infusion container in Example 22. FIG.

FIG. 30 is a schematic structural diagram of the sealing member for an infusion container in Example 24. FIG.

31 is an exploded view of the sealing member for an infusion container in Example 24. FIG.

32 is a schematic structural diagram of the sealing member for an infusion container in Example 25. FIG.

33 is an exploded view of the sealing member for an infusion container in Example 25. FIG.

Detailed ways

The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Example 1

As shown in FIG. 3 , the sealing member for an infusion container of the present invention includes a PP/PE cover body 3 and a liquid barrier soft film 7.2 with a thickness of 0.2 mm; the PP/PE cover body 3 can cover the mouth of the infusion container A cavity 31 is formed in the PP/PE cover body 3, and the liquid barrier soft film 7.2 is arranged in the cavity 31 of the PP/PE cover body 3, and is connected with the cavity of the PP/PE cover body 3 The inner wall of 31 is sealed and fixedly connected; the cavity of the PP/PE cover body 3 is also provided with a thermoplastic elastomer pad 6 , and the thermoplastic elastomer pad 6 is sealed and fixedly connected to the inner wall of the cavity of the PP/PE cover body 3 . The function of the liquid barrier soft film 7.2 is to isolate the contact between the liquid in the infusion container and the thermoplastic elastomer pad 6 . The material of the PP/PE cover body 3 is polypropylene (PP) or polyethylene (PE).

The PP/PE cover body 3 and the thermoplastic elastomer pad 6 are integrally formed, and the liquid barrier soft film 7.2 and the PP/PE cover body 3 are not integrally formed, but are sealed and fixedly connected by hot-melt welding. , the inner wall of the cavity of the PP/PE cover body 3 is provided with an annular protrusion 13, and the edge of the liquid barrier soft film 7.2 is sealed and fixedly connected with the annular protrusion 13 by welding. The liquid barrier soft film 7.2 is located on the side of the thermoplastic elastomer pad 6 close to the infusion container. The liquid barrier soft film 7.2 is located in the middle of the PP/PE cover body 3 .

The liquid barrier soft film 7.2 adopts commercially available multi-layer co-extruded film materials for medicinal packaging, such as the co-extrusion film for infusion produced by Hubei Hengtai Rubber & Plastic Co., Ltd. The liquid barrier soft film 7.2 has a soft and soft texture due to its relatively thin thickness. It has the advantages of good performance and easy welding. The welding edge is flat and there will be no burrs and filaments, and the puncture will not drop chips.

The thermoplastic elastomer pad 6 is provided with a plurality of acupuncture holes 2, and the cross-sections of the acupuncture holes are circular. The longitudinal section of the acupuncture hole is an inverted trapezoid. The inner diameter of the acupuncture hole 2 is smaller than the diameter d of the puncture needle 9 (resin needle) shown in FIG. 28 .

The thermoplastic elastomer pad 6 is provided with three grooves 4 (also known as hanging spaces), and the grooves 4 are located on the lower side of the thermoplastic elastomer pad 6 . The cross-section of the groove 4 can be of various shapes, and in this embodiment, it is fan-shaped, and the side wall of the groove 4 is straight. The groove 4 and the acupuncture hole 2 are arranged at intervals, and the periphery of the groove 4 is not involved with the acupuncture hole 2. When the puncture needle 9 penetrates the thermoplastic elastomer pad 6 from the acupuncture hole 2 and is pulled out, the needle The thermoplastic elastomer pad 6 in the puncture hole 2 can quickly rebound and close, preventing the liquid from flowing out/out of the PP/PE cover body 3 .

The infusion container is an infusion plastic bottle. The lower end of the PP/PE cap body 3 is formed with an interface for connecting with an infusion bottle. The upper side of the PP/PE cover body 3 is provided with a film 5 . A glue inlet 10 is formed on the thermoplastic elastomer pad 6, and the glue inlet 10 is the place where the material is fed during the injection molding process.

The production process of the seal for the infusion container includes:

Step 1: Use a multi-material two-color injection mold to inject the first mold PP/PE cover body 3 in the cover injection area of the multi-material two-color injection molding machine at one time;

Step 2: The multi-material two-color injection molding machine opens the mold, rotates the machine table, and then closes the mold. In the thermoplastic elastomer injection area of the multi-material two-color injection molding machine, the thermoplastic elastomer pad 6 is injected into the first mold PP/PE cover body 3 to make The thermoplastic elastomer pad 6 is integrated with the PP/PE cover body 3 . Since the liquid barrier soft film 7.2 is not formed in the PP/PE cover body 3 at this time, the injection-molded thermoplastic elastomer pad 6 does not have air trapping. At the same time, the second mold PP/PE cover body 3 is injection-molded at one time in the cover injection area of the multi-material two-color injection molding machine;

Step 3: The multi-material two-color injection molding machine rotates the machine table, and the first mold is finished in the cover injection area of the multi-material two-color injection mold, and then the mold is closed, and the third mold is injection-molded in the cover injection area of the multi-material two-color injection molding machine at one time. PP/PE cover body 3, at the same time, the thermoplastic elastomer pad 6 is injected into the second mold PP/PE cover body 3 in the thermoplastic elastomer injection zone of the multi-material two-color injection molding machine, and so on and so forth.

Step 4: Use a film applicator to spray medical grade silicone oil on the thermoplastic elastomer pad 6 of the injection-molded finished product, hot-melt and weld the liquid barrier soft film 7.2 in the PP/PE cover body 3, and then hot-melt the PP/PE cover body 3 The film 5 is attached and tested to obtain a sealing member for an infusion container.

The PP/PE cover body 3 is thermally welded on the mouth of the infusion container. When in use, as shown in Figure 13, tear off the film 5 and use a puncture needle 9 (the puncture needle 9 can be a resin needle or an injection steel needle.) The thermoplastic elastomer pad 6 and the liquid barrier soft film 7.2 are pierced through the acupuncture hole 2 and enter into the infusion container to add medicine or infusion, because the thermoplastic elastomer pad 6 and the liquid barrier soft film 7.2 are in a separated state. When the puncture needle 9 pulls out the thermoplastic elastomer pad 6, the thermoplastic elastomer pad 6 is not restrained by the liquid barrier soft film 7.2, which fully exerts the resilience performance of the thermoplastic elastomer pad 6 and prevents liquid from flowing out/seeping out of PP/PE Cover body 3.

Example 2

As shown in FIG. 6 , the sealing member for an infusion container in this embodiment is similar to that in Embodiment 1, the difference is that the film 5 is replaced with an easy-to-fold type gland, and the easy-to-fold type gland includes a PP/ The gland body 5.2 on the upper side of the PE cover body 3, the gland body 5.2 is provided with an infusion hole 5.6 that allows the puncture needle 9 to pass through, and the infusion hole 5.6 of the gland body 5.2 is provided with an easy-to-fold handle 5.1, and the easy-to-fold handle 5.1 Connected with the gland body 5.2 as a whole, the easy-folding handle 5.1 and the gland body 5.2 can be separated from each other by external force, thereby exposing the infusion hole 5.6; the easy-folding handle 5.1 is arranged along the direction perpendicular to the upper end face of the gland body 5.2 .

The production process of the seal for the infusion container is similar to that of Example 1, the difference is that the film applicator in step 4 is replaced with a capping machine, and the film 5 is hot melted on the PP/PE cover body 3, and replaced with a PP/PE cover. The PE cover body 3 is hot-melted and welded with an easy-folding cover.

When in use, the PP/PE cover body 3 is hot-melt welded on the mouth of the infusion container, and the easy-to-fold handle 5.1 is broken off, so that the easy-to-fold handle 5.1 is separated from the gland body 5.2, and the infusion hole 5.6 is exposed. The acupuncture hole 2 can be inserted into the infusion container to add medicine or infusion.

Example 3

As shown in FIG. 8 , the sealing member for an infusion container in this embodiment is similar to that in Embodiment 1, with the difference that the film 5 is replaced with an easy-triggered gland 5.3. The easy-to-pull gland 5.3 includes a gland body 5.2 placed on the upper side of the PP/PE cover body 3. The gland body 5.2 is provided with two infusion holes 5.6 that allow the puncture needle to pass through. An easy wrench handle 5.7 is provided in the hole 5.6, and the easy wrench handle 5.7 is connected with the gland body 5.2 as a whole. The easy wrench handle 5.7 and the gland body 5.2 can be separated from each other by external force, thereby exposing the infusion hole 5.6. The easy wrench handle 5.7 is arranged in a direction parallel to the upper end face of the gland body 5.2.

The production process of the seal for the infusion container is similar to that of Example 1, the difference is that the film applicator in step 4 is replaced with a capping machine, and the film 5 is hot melted on the PP/PE cover body 3, and replaced with a PP/PE cover. The PE cover body 3 is hot-melted and welded with an easy-to-pull type gland 5.3.

When in use, hot-melt the PP/PE cover body 3 on the mouth of the infusion container, so that the easy wrench handle 5.7 is separated from the gland body 5.2, and the infusion hole 5.6 is exposed, and the puncture needle 9 is used to pierce the infusion through the acupuncture hole 2. The container can be filled with medicine or infusion.

Example 4

As shown in FIG. 9 , the sealing member for an infusion container in this embodiment is similar to that in Embodiment 1, with the difference that the film 5 is replaced with an easy-triggered gland 5.3. The easy-to-pull gland 5.3 includes a gland body placed on the upper side of the PP/PE cover body 3. The gland body is provided with an infusion hole that allows the puncture needle to pass through. The infusion hole of the gland body is provided with an infusion hole. There is an easy wrench handle, the easy wrench handle and the gland body are integrated into one, and the easy wrench handle and the gland body can be separated from each other by means of external force, thereby exposing the infusion hole. The easy wrench handle is arranged in a direction parallel to the upper end face of the gland body.

The production process of the seal for the infusion container is similar to that of Example 1, the difference is that the film applicator in step 4 is replaced with a capping machine, and the film 5 is hot melted on the PP/PE cover body 3, and replaced with a PP/PE cover. The PE cover body 3 is hot-melted and welded with an easy-to-pull type gland 5.3.

When in use, hot-melt the PP/PE cover body 3 on the mouth of the infusion container, so that the easy wrench handle is separated from the gland body, exposing the infusion hole, and the puncture needle 9 is used to pierce the infusion container through the acupuncture hole 2. medicine or infusion.

Example 5

As shown in FIG. 11 , the sealing member for an infusion container in this embodiment is similar to that in Embodiment 1, except that the film 5 is replaced with a ring-pulling gland 5.4. The pull ring type gland 5.4 includes a gland body placed on the upper side of the PP/PE cover body 3. The edge and the middle of the gland body can be separated by external force, and the middle part of the gland body is connected to the pull ring 5.5. When the edge and the middle of the gland body are separated, the edge of the gland body remains on the upper side of the cover body.

The production process of the seal for the infusion container is similar to that of Example 1, the difference is that the film applicator in step 4 is replaced with a capping machine, and the film 5 is hot melted on the PP/PE cover body 3, and replaced with a PP/PE cover. The pull ring type gland 5.4 is hot melt welded on the PE cover body 3 .

When in use, the PP/PE cover body 3 is hot-melt welded on the mouth of the infusion container, so that the pull ring 5.5 drives the middle part of the gland body to separate from the edge, and the puncture needle 9 is used to pierce the infusion container through the acupuncture hole 2. medicine or infusion.

Example 6

As shown in FIG. 14 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 1, except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for an infusion soft bag, and an interface 3.1 for connecting with the infusion soft bag is formed at the lower end thereof. The groove 4 is located on the upper side of the thermoplastic elastomer pad 6 .

Example 7

As shown in FIGS. 15 and 16 , the sealing member for an infusion container in this embodiment is similar to that of Embodiment 2, except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for an infusion soft bag, and the lower end thereof is formed with an interface for connecting with the infusion soft bag. The groove 4 is located on the upper side of the thermoplastic elastomer pad 6 .

Example 8

As shown in FIG. 17 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 4, except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for an infusion soft bag, and the lower end thereof is formed with an interface for connecting with the infusion soft bag.

Example 9

As shown in FIG. 18 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 3, except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for an infusion soft bag, and the lower end thereof is formed with an interface for connecting with the infusion soft bag.

Example 10

As shown in FIG. 19 , it is similar to Embodiment 5, except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for an infusion soft bag, and the lower end thereof is formed with an interface for connecting with the infusion soft bag.

Example 11

As shown in FIG. 20 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 6, except that the PP/PE cover body 3 has two cavities 31 formed therein, and the two cavities 31 form two A separate pipeline can be used for dosing or infusion respectively.

Example 12

As shown in Figures 21 and 22, the sealing member for an infusion container in this embodiment is similar to that in Embodiment 7, except that the PP/PE cover body 3 is formed with two cavities, and the two cavities form two cavities. A separate pipeline can be used for dosing or infusion respectively.

Example 13

As shown in FIG. 23 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 8, except that the PP/PE cover body 3 has two cavities formed therein, and the two cavities form two independent cavities. The pipeline can be used for dosing or infusion respectively.

Example 14

As shown in FIG. 24 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 9, except that the PP/PE cover body 3 has two cavities formed therein, and the two cavities form two independent cavities. The pipeline can be used for dosing or infusion respectively.

Example 15

As shown in FIG. 25, similar to Embodiment 10, the difference is that the PP/PE cover body 3 is formed with two cavities, and the two cavities form two independent pipelines, which can be used for adding medicine or infusion.

Example 16

As shown in FIGS. 4 and 5 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 1, except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6 .

Example 17

As shown in FIG. 7 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 2, except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6 .

Example 18

As shown in FIG. 10 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 4, except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6 .

Example 19

As shown in FIG. 12 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 5, except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6 .

Example 21

As shown in FIGS. 26 and 27 , the sealing member for an infusion container of this embodiment is similar to that of Embodiment 1, except that the acupuncture holes 2 are provided on the upper and lower sides of the thermoplastic elastomer pad 6 .

Example 22

As shown in FIG. 29 , the sealing member for an infusion container in this embodiment is similar to that in Embodiment 1, except that the liquid barrier soft film 7.2 is located at the bottom of the PP/PE cover body 3 .

Example 23

The seal for an infusion container in this embodiment is similar to that in Embodiment 1, except that the liquid barrier soft film 7.2 is replaced with a rigid liquid barrier sheet, and the rigid liquid barrier sheet is made of PP/PE material that meets the requirements of liquid medical packaging Any, its thickness is the same as that of the liquid barrier soft film 7.2 in Example 1.

Example 24

As shown in FIGS. 30 and 31 , the sealing member for an infusion container in this embodiment is similar to that in Embodiment 1, except that the liquid barrier soft film 7.2 is located at the mouth of the infusion plastic bottle 11 and is different from the mouth of the infusion plastic bottle 11 . The connection is sealed and fixed by means of heat fusion welding.

The production process of the sealing member for the infusion container is similar to that of the embodiment 1, except that step 4 is: using a film applicator to spray medical grade silicone oil on the thermoplastic elastomer pad 6 of the injection-molded finished product; filling the plastic bottle for infusion After the online plastic bottle preform is blown and filled with liquid, the liquid barrier soft film 7.2 is hot-melt welded on the bottle mouth to obtain an infusion plastic bottle 11, and the PP/PE cover body 3 is hot-melt welded on the mouth of the infusion plastic bottle 11. Department, sterilized.

Example 25

As shown in Figures 32 and 33, the sealing member for the infusion container of this embodiment is similar to that of Embodiment 1, except that the soft liquid barrier film 7.2 is located at the mouth of the interface piece 12 of the soft infusion bag 11.1 and is connected to the soft infusion bag The mouth of the interface piece 12 of 11.1 is sealed and fixedly connected by means of heat fusion welding.

The production process of the seal for the infusion container is similar to that of Example 1, except that step 4 is to use a film applicator to spray medical grade silicone oil on the thermoplastic elastomer pad 6 of the injection-molded finished product; Weld the interface piece 12 on the soft infusion bag 11.1, fill the soft infusion bag 11.1 with liquid, hot-melt the soft liquid barrier film 7.2 at the mouth of the interface piece 12, and hot-melt the PP/PE cover body 3 to the interface 12, sterilized.

Claims (17)

1. A sealing member for an infusion container, characterized in that it comprises a cover body and a liquid barrier film with a thickness of 0.1mm-0.4mm or a liquid barrier sheet with a thickness of 0.1mm-0.4mm; the cover body can be set in On the mouth of the infusion container; the liquid barrier film or liquid barrier sheet is provided in the cover body and is sealed and fixedly connected with the cover body, or the liquid barrier film or liquid barrier sheet is provided on the infusion container or its interface piece. The mouth is sealed and fixedly connected with the mouth of the infusion container or its interface; the cover body is also provided with a thermoplastic elastomer pad, and the thermoplastic elastomer pad is sealed and fixed to the cover body. 2 . The sealing member for an infusion container according to claim 1 , wherein the liquid barrier film or the liquid barrier sheet is located on the side of the thermoplastic elastomer pad close to the infusion container. 3 . 3 . The sealing member for an infusion container according to claim 1 , wherein the cover body and the thermoplastic elastomer pad are integrally formed, and the liquid barrier film or the liquid barrier sheet and the cover body are not integrally formed. 4 . 4 . The sealing member for an infusion container according to claim 1 , wherein the liquid barrier film or the liquid barrier sheet and the cover are connected by welding. 5 . 5 . The sealing member for an infusion container according to claim 1 , wherein the thermoplastic elastomer pad and the liquid-barrier film or the liquid-barrier sheet are partially or entirely separated from each other. 6 . 6. The sealing member for an infusion container according to claim 1, wherein an annular protrusion is provided on the inner wall of the cover, and the edge of the liquid barrier film or the liquid barrier sheet is connected to the annular protrusion. The protrusion seals the fixed connection. 7 . The sealing member for an infusion container according to claim 1 , wherein the liquid barrier film or the liquid barrier sheet is located in the middle or bottom of the cover body. 8 . 8 . The sealing member for an infusion container according to claim 1 , wherein one or more acupuncture holes are provided on the upper side and/or the lower side of the thermoplastic elastomer pad. 9 . 9 . The sealing member for an infusion container according to claim 8 , wherein the cross-section of the acupuncture hole is circular, elliptical or elliptical-like. 10 . 10 . The sealing member for an infusion container according to claim 8 , wherein the longitudinal section of the acupuncture hole is square or trapezoidal. 11 . 11. The sealing member for an infusion container according to claim 8, wherein the inner diameter of the acupuncture hole is smaller than the diameter of the puncture needle, and the puncture needle is a resin needle. 12. The sealing member for an infusion container according to claim 1, wherein the thermoplastic elastomer pad is provided with at least one groove, and the groove is located on the upper side and/or the lower side of the thermoplastic elastomer pad side. 13. The sealing member for an infusion container according to claim 12, wherein the side wall of the groove is a straight surface or a tapered surface. 14 . The sealing member for an infusion container according to claim 1 , wherein the upper side of the cover body is provided with a film, a pull-ring type gland, an easy-fold type gland or an easy-toggle type gland. 15 . 15. The sealing member for an infusion container according to claim 14, wherein the ring-pulling gland comprises a gland body placed on the upper side of the cover body, and the edge and the middle of the gland body can rely on external force When separated, the middle part of the gland body is connected with the pull ring. When the edge of the gland body is separated from the middle part, the edge of the gland body remains on the upper side of the cover body; The gland body, the gland body is provided with an infusion hole that allows the puncture needle to pass through, and the infusion hole of the gland body is provided with an easy-folding handle, the easy-folding handle and the gland body are integrated, and the easy-folding handle and the gland The bodies can be separated from each other by means of external force, thereby exposing the infusion hole; the easy-trigger gland includes a gland body placed on the upper side of the cover body, the gland body is provided with an infusion hole that allows the puncture needle to pass through, and the gland An easy wrench handle is arranged in the infusion hole of the body, and the easy wrench handle and the gland body are connected as a whole, and the easy wrench handle and the gland body can be separated from each other by external force, thereby exposing the infusion hole. 16. The sealing member for an infusion container according to claim 14, wherein the easy-folding handle is arranged in a direction perpendicular to the upper end face of the gland body, and the easy-wrench handle is arranged along a direction parallel to the upper end surface of the gland body. The orientation of the end face is set. 17. The seal for an infusion container according to claim 1, wherein the infusion container is an infusion bottle or a soft bag, and the lower end of the cover body is formed with a seal for connecting with the infusion bottle, the infusion soft bag or the infusion soft bag. For the interface connected by the interface piece, the cover body is provided with one or two cavities, the thermoplastic elastomer cushion is arranged in at least one cavity, and the thermoplastic elastomer cushion is sealed and fixedly connected with the inner wall of the cavity.

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